The specific resistance of a conductor depends on its:

material

Reason — Specific resistance (also called resistivity, denoted by ρ) is a material property of a conductor and does not depend on its dimensions. It depends on :

1. The type of material (like copper, aluminium, iron, etc.)
2. Temperature (resistivity can change with temperature)

But it does not depend on :

1. Length
2. Area of cross-section
3. Radius